Java uses the substring function to intercept a string, substringstring

Java uses the substring function to intercept a string, substringstring
There are two substring () functions in String, as follows:

I. String. substring (int start)

Parameters:

Start: Index of the location to be intercepted

Return Value:

String from start to end

Example: String str = "hello word! ";
System. out. println (str. substring (1 ));

System. out. println (str. substring (3 ));

System. out. println (str. substring (6 ));

The result is as follows:

Ello word!

Lo word!

Ord!

If start is longer than the string length, an out-of-bounds exception is thrown;

Ii. String. substring (int beginIndex, int endIndex)

Parameters:

BeginIndex start Position Index

EndIndex end position index

Return Value:

String from beginIndex to endIndex

Example: String str = "hello word! ";

System. out. println (str. substring (1, 4 ));

System. out. println (str. substring (3,5 ));

System. out. println (str. substring (0, 4 ));

The result is as follows:

Ell

Lo

Hell

If either startIndex or endIndex is out of bounds, an out-of-bounds exception is thrown.